JPH0784636A - Method and device for collecting/monitoring process data - Google Patents

Abstract

PURPOSE:To obtain a process data collecting/monitoring method and device capable of reducing operator's load by referring to the detection of plant abnormality/abnormal sign position, an estimated cause and relative parameters. CONSTITUTION:A data collecting/monitoring computer 10 collects process data from plural equipment in the plant and automatically stores the data in a data base part 9. An operation part 7 in the computer 10 executes the arithmetic processing of the stored process data based upon a previously registered abnormality/abnormal sign operation rule and judges and displays the abnormal state abnormal sign of the data on a display device 1. Simultaneously ralative parameters, relative events and an estimated cause can also be displayed in reference on the device 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process data collecting / monitoring method and a process data collecting / monitoring device for collecting process data in a plant and accumulating and storing the process data to monitor the plant.

[0002]

2. Description of the Related Art History of process data in a plant such as a nuclear power plant is conventionally recorded and accumulated on paper by a pen recorder or the like, and an experienced operator or maintenance person can see the recorded result. It has been generally performed to determine whether or not there is an abnormality in a plant to be monitored or where there is an abnormality symptom. However, such paper-based records and accumulated data are complicated to handle in terms of reference and management.
In recent years, instead of this, there is a shift to a method of storing history data in a database by using a data collection computer equipped with a large-capacity database.

As such a conventional technique, for example, Japanese Unexamined Patent Publication No. 1-
According to Japanese Patent No. 42999, the monitoring / diagnosing device collects the data of the operating state at the time of abnormal operation of the monitored device to collect the data, and the data of the operating state of the monitored device at the time of abnormal operation is collected. Can be collected,
There is known a remote monitoring diagnostic system that makes it easier to detect the cause of abnormality and the location of abnormality. In addition, Japanese Patent Laid-Open No. 2-15
According to Japanese Patent No. 6399, by storing process data of all points as history information and also storing search information, it is possible to surely save information necessary for plant analysis and to facilitate the search. "Plant analyzer" is known. Further, according to Japanese Patent Laid-Open No. 4-27824, a means for storing all the data sent from the plant for a long period of time is provided, and the input data is organized and shown to the operator in a diagram or the like. "A plant data collection / output device that enables accident analysis", which has the content of showing changes in data before and after an accident in an easy-to-see format, is already known.

[0004]

However, in the above-mentioned prior art, although the process data can be stored and retrieved easily by storing the history data in the form of a database, however, the abnormalities / abnormalities of the plant equipment are not detected. When detecting the location, it is still necessary to display the trend of the target history data and to judge the waveform by a skilled operator or maintenance person while watching the waveform.

In view of the above-mentioned problems in the prior art, the object of the present invention is to automatically execute, in particular, detection of a plant abnormality / abnormal symptom location, estimation of its cause, and reference display of related parameters. It is possible to provide a process data collecting / monitoring method and apparatus that can reduce the burden on plant operators and maintenance personnel.

[0006]

As means for achieving the above object, according to the present invention, a process data collecting / monitoring method for collecting process data of a plant, and accumulating and saving the process data is first described. , Accumulated and stored process data input from a plurality of equipment of the plant, arithmetic processing is performed according to a pre-registered abnormality and abnormality symptom calculation rule, and determination is also made including the abnormality symptom together with the abnormal state of the equipment, A process data collection / monitoring method characterized by displaying the judgment result on a display device is proposed.

As another means for achieving the above object, according to the present invention, process data is collected from a plurality of equipments of a plant and is stored and stored in the storage means. , Based on the stored process data, the calculation means according to the calculation rule of the abnormality and the abnormality sign registered in advance to determine the abnormal state together with the abnormal state of the device, and the output from the calculating means. In a process data collection / monitoring device comprising a display device that displays the determination result based on the display device and at least an input device for controlling the display of the display device, the display device is at least an abnormal state of the equipment of the plant. At the same time, a process data collecting / monitoring device is proposed which has a function of displaying a judgment result including an abnormal sign.

[0008]

According to the process data collecting / monitoring method and apparatus according to the present invention, not only the plant equipment abnormality but also the abnormality symptom location can be detected by the calculation rule utilizing the know-how of the skilled operator and maintenance staff. It is possible to perform the detection including the above, further estimate the cause thereof, and automatically perform the reference display of the related parameters. Therefore, by utilizing these, it is possible to reduce the burden on the plant operator and maintenance personnel.

[0009]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. FIG. 2 is a block diagram showing the system configuration of an embodiment of the present invention. This system serves as a man-machine interface with an operator and has a display device 1 having a function of displaying various information and various requests from the operator. A keyboard device 2 and a pointing device 3 for executing and inputting various rules and attribute information to be described later, a printer device 4 having a function of printing a display screen and various data, and further data collection / monitoring. And a computer 10. The data collecting / monitoring computer 10 has an input / output management function with these man-machine devices (display device 1, keyboard device 2, pointing device 3, printer device 4, etc.), and a process 5 (specifically, a monitoring target). Is a plant device for executing each process of the plant and has a function of collecting process data of a process to be monitored in real time from a sensor for outputting each process data), It is composed of an arithmetic unit 7 having various arithmetic functions, which will be described later, a database unit 9 for storing history data and attribute data of each process signal, and various determination rules, and a database management unit 8 having its management function. .

Next, FIG. 3 shows a database configuration of the database unit 9 of the above system configuration. As shown in this figure, the database of this system is a process history data part that collects and stores each process data periodically or when a related event (for example, operation by a worker or occurrence of an alarm) occurs. 91, a unit and threshold value of each process signal, a process attribute data section 92 for storing data of each process signal attribute such as a device name of a signal source device, past maintenance status, and the like, and an operation rule section 93. It consists of and. As will be described later in detail, the calculation rule unit 93 has a rule for discriminating an abnormality or degree of data from the history of each process signal, a rule for estimating a cause of the abnormality or an abnormal symptom, and a process signal for each process signal. It stores the correlation and the like.

Next, with reference to FIGS. 4 and 5, the function of determining an abnormality or an abnormality symptom location from the history of each process signal will be described in detail. For example, in the water supply system to the reactor R as shown in FIG. 4A, the valve A is gradually opened from the state where the valve A is fully opened and the valve B is fully closed, as shown in FIG. 4B. Consider the change in the water level of the reactor when the valve B is gradually closed by closing and simultaneously switching the valve. In this case, it is assumed that the expected change in water level is estimated to be a slight increase, as in case 1 of FIG. 5 (a). On the other hand, when the actual water level change exceeds the upper threshold value as in case 2 of FIG. 5A, the calculation unit 7 of the data collection / monitoring computer 10 uses the state value It is possible to determine the abnormal portion by comparing the value with the alarm determination value (for example, the above threshold value). On the other hand, the result is shown in FIG.
In cases such as case 3 and case 4 of (a), the abnormal portion is not discriminated by comparison with the alarm judgment value (for example, the above threshold value). With respect to these, the arithmetic unit 7 of the data collection / monitoring computer 10 uses the know-how of a specialist regarding valve switching and the correlation of data stored in the database of the arithmetic rule unit 93 shown in FIG. Depending on the situation and past performance values,
The presence or absence of abnormal signs and the degree thereof are determined, and the cause of abnormal signs is estimated.

The cases 3 and 4 shown in FIG. 5A are cases in which there are abnormal signs, and the abnormal sign level of case 3 is 20% and the abnormal sign level of case 4 is 70%. (However, the higher the abnormal sign level is, the higher the possibility that there is an abnormality is.) Furthermore, the estimated abnormal sign cause is determined in such a manner that the deterioration of the valve B is 80%. Further, as shown in FIG. 5B, the change of the state value without the related event as described above (that is, when the related operation is not performed or the alarm is not issued),
It is possible to discriminate the location where the abnormal sign is established according to the rules concerning regular times.

FIG. 1 is an operation explanatory view showing an example of a screen display and an operating method in the system according to the embodiment of the present invention, and the function of the system will be specifically described with reference to this drawing. . First, FIG. 1A shows the first menu screen "Abnormality / abnormality symptom location determination menu". 1. When all input points (all devices) are targeted, and When targeting an arbitrary input point (arbitrary device), two cases can be selected. here,
For example, when the operator wants to determine an arbitrary input point, the operator specifies the area of “determination of arbitrary input point” on the display screen with the pointing device 3, and further specifies the area of “execution”. Figure 1 (b)
The “Arbitrary input point determination menu” screen shown in is displayed.
As also shown in this figure, the operator can limit the input point for performing the determination process and the period for performing the determination process. That is, "input point No" in the figure, or
Specify the desired input point or period in the "Judgment period" item. Furthermore, on this "arbitrary input point judgment menu" screen, the judgment level can be limited. In that case, by setting a desired level in the "level" item on the display screen, it is possible to arbitrarily specify the judgment only for the abnormal sign portions having a certain level or higher. In addition to the example of the designated items shown in this figure, for example, designation by system (designating system and targeting input points belonging to the system) or designation by event (designating event, event The parameter related to is to be specified) and so on. After such a designation work, by designating the "execution" area on the screen, the corresponding determination process selected is executed, and the determination result is shown in FIG.
It is displayed as the "abnormality / abnormality symptom list" shown in.

In this "abnormality / abnormality symptom list", as shown in FIG. , Occurrence date and time (when abnormality or abnormal symptom continues for a certain period, date and time of the first occurrence), level of abnormal symptom (displayed as 100% in case of abnormality) as a pair , Display the detected minutes as a list. If the number of input points to be displayed is not enough on one screen, it will be displayed on multiple screens. In that case,
The "next page" area on the screen is designated by the pointing device 3, and the page is moved until the desired input point is displayed. In addition, when the operator wants to refer to the status value of the abnormal / abnormal symptom location, after specifying the area of the desired input point and then specifying the display, the history after the abnormal / abnormal symptom of the corresponding input point occurs Figure 1
As shown in (d), a trend can be displayed.
In this trend display, various methods such as a method of automatically determining the upper and lower limit values and the period according to the historical data to be displayed and a method of displaying the threshold value are possible.

Further, when the operator wants to refer to the state value of the related parameter at the time of occurrence of the abnormality / abnormal symptom, the related parameter is displayed by designating the related parameter display area, as shown in FIG. , If this is an analog value, it is combined with the trend and displayed, and if it is an event, it is displayed separately. In addition,
Regarding the display of related parameters, when there are a large number of related parameters, prioritization is performed according to the correlation and cause estimation results, and the method of automatically displaying the highest priority first, or simply displaying a list of priorities Various methods are possible, such as a method of displaying the list without prioritizing it and allowing the operator to arbitrarily specify it. Further, when the operator wants to refer to the causes estimated by the present system, the "probable cause list" shown in FIG. 1 (f) is displayed by designating the "cause display" area in FIG. 1 (e). . This "probable cause list"
As is clear from the figure, the estimated causes and their certainty factors are displayed in a pair as a list. The "cause display" screen can be displayed from any of the display screens shown in Figs. 1 (b) to 1 (d). Furthermore, by making the above various display screens into a window structure, it is possible to make reference and comparison easier.

[0016]

As is apparent from the above detailed description of the present invention, according to the process data collecting / monitoring method and apparatus of the present invention, the output from the plant equipment is automatically collected and stored. , At the same time as saving, abnormal conditions by various rules based on the knowledge base in which data is registered in advance,
Since it is possible to judge the abnormal sign state and automatically execute the estimation of the cause and the reference display of related parameters, the burden on plant operators and maintenance personnel is greatly reduced. In addition, the technically extremely excellent effect that it is possible to reliably determine the abnormality / abnormal symptom location will be exhibited.

[Brief description of drawings]

FIG. 1 is a process data collection / exemplary embodiment of the present invention.
It is drawing which shows the example of a screen display in the apparatus which implements the monitoring method.

FIG. 2 is a block diagram showing an overall system configuration of the process data collection / monitoring apparatus.

FIG. 3 is a diagram illustrating a database configuration in the process data collection / monitoring device.

FIG. 4 is an explanatory diagram illustrating an example of plant equipment monitored by the process data collection / monitoring apparatus and its operation.

FIG. 5 is a waveform diagram for explaining a principle of discriminating an abnormality / symptom of abnormality in the process data collecting / monitoring apparatus.

[Explanation of symbols]

 1 display device 2 keyboard device 3 pointing device 4 printer device 5 process 6 input / output unit 7 arithmetic unit 8 database management unit 9 database unit 10 data collection / monitoring computer 91 process history data unit 92 process attribute data unit 93 arithmetic rule unit

Claims (17)

[Claims] 1. A process data collecting / monitoring method for collecting process data of a plant, and accumulating and saving the process data, wherein the process data inputted and accumulated from a plurality of devices of the plant are registered in advance. A process data collection / monitoring method characterized by performing a calculation process according to a calculation rule of abnormalities and abnormal signs, making a judgment including abnormal signs as well as an abnormal state of the device, and displaying the judgment result on a display device. 2. The process data collecting / monitoring method according to claim 1, wherein when the process data deviates from a permissible region according to the previously registered abnormality and abnormality symptom calculation rule, the device Process data collection / monitoring method, characterized in that the abnormal state of the process data is judged, and if the process data is within the permitted area, the presence or absence of an abnormal sign is judged based on the condition of the process data. . 3. The process data collecting / monitoring method according to claim 1, wherein the previously registered abnormality and abnormality symptom calculation rule includes a knowledge base based on expert know-how. Collection / monitoring method. 4. The process data collection / monitoring method according to claim 1, wherein the previously registered abnormality and abnormality symptom calculation rule includes a relation between the process data and other process data. Method of collecting and monitoring process data. 5. The process data collection / monitoring method according to claim 1, wherein the previously registered abnormality and abnormality symptom calculation rule also includes a condition of a parameter associated with the process data. Process data collection and monitoring method. 6. The process data collection / monitoring method according to claim 1, wherein the pre-registered abnormality and abnormality symptom calculation rule further displays the certainty factor of the abnormality symptom of the device to be judged at a plurality of levels. A method for collecting and monitoring process data. 7. The process data collection / monitoring method according to claim 1, wherein the previously registered abnormality and abnormality symptom calculation rule further estimates the reason for detecting the abnormality symptom of the device to be judged. How to collect and monitor process data. 8. The process data collection / monitoring method according to claim 1, wherein the previously registered abnormality and abnormality symptom calculation rule further estimates the cause of the abnormality symptom of the device to be determined. How to collect and monitor process data. 9. The process data collection / monitoring method according to claim 1, wherein the previously registered abnormality and abnormality symptom calculation rule targets only the equipment of a plant arbitrarily designated, and detects the abnormal state and abnormality symptom. A process data collection / monitoring method characterized by including the judgment. 10. The process data collection according to claim 1
In the monitoring method, the pre-registered abnormality and abnormality symptom calculation rule is a process data collection / monitoring characterized by determining an arbitrarily designated period and including the abnormal state and abnormality symptom of the plant equipment. Method. 11. A storage unit that collects process data from a plurality of equipment of a plant and stores and stores the process data, and an abnormality and an abnormal symptom registered in advance based on the process data stored and stored in the storage unit. A computing unit that performs a computation process according to a computation rule to determine an abnormal state of the device together with an abnormality sign, a display device that displays the determination result based on the output from the computing unit, and at least a display of the display device. In the process data collection / monitoring device consisting of an input device for controlling
At least, a process data collecting / monitoring device having a function of displaying a judgment result including an abnormal sign as well as an abnormal state of equipment of the plant. 12. The process data collecting / monitoring device according to claim 11, wherein the display device has a function of displaying a list of devices of the plant in which an abnormal state or an abnormal sign is determined. Process data collection / monitoring device. 13. The process data collecting / monitoring device according to claim 11, wherein the display device has a function of displaying at least a relevant parameter or a relevant event of the plant device for which an abnormal symptom is determined. Process data collection and monitoring equipment. 14. The process data collection / monitoring device according to claim 11, wherein the display device has a function of displaying a list of probable causes of at least the plant device for which an abnormal symptom is determined. Process data collection / monitoring device. 15. The process data collecting / monitoring device according to claim 11, wherein the display device has a function of displaying a judgment result including an abnormal condition as well as an abnormal condition of the equipment of the plant in a window. Characteristic process data collection and monitoring device. 16. The process data collecting / monitoring device according to claim 11, wherein the display device has a menu display function for determination including an abnormal condition as well as an abnormal condition of the equipment of the plant. Characteristic process data collection and monitoring device. 17. The process data collecting / monitoring apparatus according to claim 11, wherein the storage unit includes a history data section that changes the time series of process data that is collected from the plant equipment, accumulated, and saved. A process data collecting / monitoring apparatus, which is stored in a database configuration including a process attribute data section including information related to plant equipment and an operation rule section including the previously registered operation rules for anomaly and anomaly symptom.